数学物理学报(英文版) ›› 2023, Vol. 43 ›› Issue (4): 1881-1914.doi: 10.1007/s10473-023-0425-8

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THE GLOBAL SOLUTION AND BLOWUP OF A SPATIOTEMPORAL EIT PROBLEM WITH A DYNAMICAL BOUNDARY CONDITION

Minghong XIE1, Zhong TAN2,3,†   

  1. 1. School of Mathematics and Statistics, Central China Normal University, Wuhan 430079, China;
    2. School of Mathematical Science, Xiamen University, Xiamen 361005, China;
    3. Shenzhen Research Institute of Xiamen University, Shenzhen 518057, China
  • 收稿日期:2021-12-07 修回日期:2022-05-04 发布日期:2023-08-08
  • 通讯作者: †Zhong TAN, E-mail: tan85@xmu.edu.cn
  • 作者简介:Minghong XIE, E-mail: xiemh0622@hotmail.com
  • 基金资助:
    *NNSF of China (12071391) and the Guangdong Basic and Applied Basic Research Foundation (2022A1515010069).

THE GLOBAL SOLUTION AND BLOWUP OF A SPATIOTEMPORAL EIT PROBLEM WITH A DYNAMICAL BOUNDARY CONDITION

Minghong XIE1, Zhong TAN2,3,†   

  1. 1. School of Mathematics and Statistics, Central China Normal University, Wuhan 430079, China;
    2. School of Mathematical Science, Xiamen University, Xiamen 361005, China;
    3. Shenzhen Research Institute of Xiamen University, Shenzhen 518057, China
  • Received:2021-12-07 Revised:2022-05-04 Published:2023-08-08
  • Contact: †Zhong TAN, E-mail: tan85@xmu.edu.cn
  • About author:Minghong XIE, E-mail: xiemh0622@hotmail.com
  • Supported by:
    *NNSF of China (12071391) and the Guangdong Basic and Applied Basic Research Foundation (2022A1515010069).

摘要: We study a spatiotemporal EIT problem with a dynamical boundary condition for the fractional Dirichlet-to-Neumann operator with a critical exponent. There are three major ingredients in this paper. The first is the finite time blowup and the decay estimate of the global solution with a lower-energy initial value. The second ingredient is the $L^q(2\leq q<\infty)$ estimate of the global solution applying the Moser iteration, which allows us to show that any global solution is a classical solution. The third, which is the main ingredient of this paper, explores the long time asymptotic behavior of global solutions close to the stationary solution and the bubbling phenomenons by means of a concentration compactness principle.

关键词: spatiotemporal EIT problem, fractional Dirichlet-to-Neumann operator, critical exponent, bubbling phenomena

Abstract: We study a spatiotemporal EIT problem with a dynamical boundary condition for the fractional Dirichlet-to-Neumann operator with a critical exponent. There are three major ingredients in this paper. The first is the finite time blowup and the decay estimate of the global solution with a lower-energy initial value. The second ingredient is the $L^q(2\leq q<\infty)$ estimate of the global solution applying the Moser iteration, which allows us to show that any global solution is a classical solution. The third, which is the main ingredient of this paper, explores the long time asymptotic behavior of global solutions close to the stationary solution and the bubbling phenomenons by means of a concentration compactness principle.

Key words: spatiotemporal EIT problem, fractional Dirichlet-to-Neumann operator, critical exponent, bubbling phenomena